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Finding the Fourth Proportional to 2,500.17, 3,750.17 and 768.75

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Solution

The fourth proportional to 2,500.17, 3,750.17 and 768.75 is: 1,153.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,500.17 : 3,750.17 = 768.75 : x
  2. Step 2: Convert to fraction form
    2,500.17/3,750.17 = 768.75/x
  3. Step 3: Cross multiply
    2,500.17x = 3,750.17 × 768.75
  4. Step 4: Simplify right side
    2,500.17x = 2,882,939.34
  5. Step 5: Solve for x
    x = 2,882,939.34/2,500.17
  6. Step 6: Final answer
    x = 1,153.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.